Types of disease surveillance in very short: There are three main types of disease surveillance: 1. Passive surveillance 2. Active surveillance 3. Sentinel surveillance

Passive surveillance involves the routine reporting of cases by healthcare providers or laboratories.

Active surveillance involves actively seeking out cases through methods such as surveys or screenings.

Sentinel surveillance involves monitoring specific populations or locations to track trends in disease occurrence.

- Passive surveillance: Data is collected after patients seek care.
- Active surveillance: People are actively sought out for testing and data collection.
- Sentinel surveillance: Data is collected from a specific group of people or locations.